FAA Part 107 Drone Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The floor of the Class E airspace surrounding Mercer County Regional (HZE) is indeed 2,514 feet Mean Sea Level (MSL). Class E airspace generally serves as a transition area between controlled and uncontrolled airspace and starts at a designated altitude or an identified point, such as the floor indicated for specific airports.

In the case of Mercer County Regional, there’s a requirement to provide adequate vertical separation above terrain and other airspace users. This airspace is typically established to enhance safety for aircraft operating in the vicinity of the airport while allowing for larger craft to maneuver safely around smaller aircraft and drones.

By having the Class E airspace start at 2,514 feet MSL, it facilitates both controlled operations in terminal areas and maintains a buffer for manned flight operations in the vicinity, ensuring that there is proper separation from lower altitude operations typically associated with general aviation.

This altitude is significant as designs for airspace are often influenced by the topography of the area and the approach paths of the runways in use. Understanding these details helps drone operators navigate safely and comply with regulatory requirements when flying near airports or in controlled airspace.